Abstract: The invention relates to converters for converting a DC input voltage a DC or an AC output voltage. The converters have a parasitic inductance. The converters comprise at least one switching element connected to an input terminal for providing a first voltage at an output terminal. In order to allow temporarily storing, in a capacitor, energy induced by the parasitic inductance when switching OFF the switching element, a first series circuit of a diode and a capacitor is provided in the converter, wherein the diode is coupled to the one input terminal. An active circuit coupled in parallel with the diode enables controlling the release of temporarily stored energy from the capacitor of the first series circuit.

Abstract: The invention relates to a DC to AC converter circuit. In particular, the invention relates to a half-bridge inverter for converting a DC to an AC voltage. The half-bridge inverter for converting a DC input voltage to provide an AC output voltage at an output terminal, comprising a first switching circuit connected to at least one input terminal and to the output terminal and configured to provide a high or a low voltage level at the output terminal; a second switching circuit connected to the output terminal and configured to provide a connection to an intermediate voltage level, the intermediate voltage level being between the high and the low voltage level; and wherein the second switching circuit is further connected to the at least one input terminal allowing the second switching circuit to provide the high or the low voltage level at the output terminal.

Abstract: The invention relates to converters for converting a DC input voltage a DC or an AC output voltage. The converters have a parasitic inductance. The converters comprise at least one switching element connected to an input terminal for providing a first voltage at an output terminal. In order to allow temporarily storing, in a capacitor, energy induced by the parasitic inductance when switching OFF the switching element, a first series circuit of a diode and a capacitor is provided in the converter, wherein the diode is coupled to the one input terminal. An active circuit coupled in parallel with the diode enables controlling the release of temporarily stored energy from the capacitor of the first series circuit.

Abstract: The invention relates to a DC to AC converter circuit. In particular, the invention relates to a half-bridge inverter for converting a DC to an AC voltage. The half-bridge inverter for converting a DC input voltage to provide an AC output voltage at an output terminal, comprising a first switching circuit connected to at least one input terminal and to the output terminal and configured to provide a high or a low voltage level at the output terminal; a second switching circuit connected to the output terminal and configured to provide a connection to an intermediate voltage level, the intermediate voltage level being between the high and the low voltage level; and wherein the second switching circuit is further connected to the at least one input terminal allowing the second switching circuit to provide the high or the low voltage level at the output terminal.

Abstract: A DC/DC converter circuit to be used in the field of MPPT for solar inverters, for step-up DC/DC conversion for high output voltages, and for chargers in electrical vehicles. The circuit comprises a first DC terminal and a second DC terminal, a first DC voltage being defined there between. It further comprises a positive split DC terminal and a midpoint terminal, a positive split DC voltage being defined there between. A negative split DC terminal is provided, a negative split DC voltage being defined between said negative split DC terminal and said midpoint terminal. A first switch and a second switch are provided, and a converter inductance is storing electric energy therein. A first diode is connected between a first terminal of said first switch and said positive split DC terminal, and a second diode is coupled between an internal midpoint and said midpoint terminal.

Abstract: The present invention generally relates to power electronic switching circuits and in particular to inverter modules employing two or more controlled switches that can be used with reactive loads. An inverter circuit is provided which comprises first and second input terminals for being connected to a DC power source; first and second output terminals for outputting an AC voltage; at least one metal oxide semiconductor field effect transistor, MOSFET, having a parasitic body diode. The inverter circuit further comprises at least one disabling element for disabling said body diode. This may result in an improved efficiency of the inverter circuit in combination with a reactive power capability. Further, a semiconductor switching device is disclosed, comprising at least one metal oxide semiconductor field effect transistor, MOSFET, and at least one insulated gate bipolar transistor, IGBT, wherein said MOSFET and said IGBT are connected in parallel.

Abstract: The present invention relates to power modules for controlling an input current to provide an output current, in particular, to such a power module (100) comprising at least one semiconductor switch for controlling the input current and a circuit substrate. The circuit substrate (108, 110) has at least one input terminal for being connected to an input voltage and at least one output terminal for outputting the output voltage. The input terminal and the output terminal are connected to each other via a main current path (104) that is controlled by the semiconductor switch. Said power module further comprises at least one transient current path (102) with extremely low inductivity for carrying a transient current during a switching operation of the semiconductor switch. The main path for the continuous current has a low ohmic resistance, but does not have to be designed to have a specifically low inductance.

Abstract: An electronic circuit is connected between input lines of an alternating input power supply and input lines of a boost converter to limit an input inrush current and/or an output short-circuit current supplied to the boost converter in a power supply. The electronic circuit includes a rectifier circuit to rectify alternating input current of the alternating current power supply, and a feedback circuit for feeding back a switching signal to the rectifier circuit circuit to switch the rectifier circuit on and off.